Dangerous substance detection system

Abstract

A method of quickly detecting a handmade explosive in a bottle with a low erroneous alarm frequency is provided. A sample gas generated from a bottle placed on a bottle placement space is sucked-in, and ions of the sample gas are generated by an ion source and subjected to mass analysis. The presence/absence of a mass spectrum derived from the handmade explosive is determined from an obtained mass spectrum, and the result thereof is displayed on a monitor, thereby quickly detecting the handmade explosive in the bottle or the handmade explosive adhering to the surface of the bottle at a low erroneous alarm frequency.

What is claimed is: 
     
       1. A dangerous substance detection system comprising:
 a bottle placement space for placing a bottle to be detected; 
 an introduction region bored in the bottle placement space; 
 an intake region for sucking-in a sample gas from the introduction region; 
 an ion source for ionizing the sucked-in sample gas; 
 a mass analysis region for subjecting an ion generated by the ion source to mass analysis; 
 a data processor for controlling the ion source and the mass analysis region; 
 a database region for retaining mass spectrum data derived from a handmade explosive; 
 an identification region for collating the result of the mass analysis of the sample gas carried out by the mass analysis region with the mass spectrum data retained in the database region and determining presence/absence of the handmade explosive; and 
 a monitor for displaying the result of the determination carried out by the identification region; 
 wherein the introduction region and the ion source are connected to each other by a first sample introduction pipe and a second sample introduction pipe disposed in parallel to each other, and the first sample introduction pipe is heated to 50° C. to 120° C. 
 
     
     
       2. The dangerous substance detection system according to  claim 1 , wherein the ion source generates the ion by a corona discharge. 
     
     
       3. The dangerous substance detection system according to  claim 1 , wherein the identification region determines that triacetone triperoxide has been detected if the ion having at least one mass/charge ratio among mass/charge ratios of 33, 43, 75, and 77 is detected from the sample gas. 
     
     
       4. The dangerous substance detection system according to  claim 1 , wherein the identification region determines that hexamethylenetriperoxidediamine has been detected if the ion having at least one mass/charge ratio among mass/charge ratios of 145, 179, and 209 is detected from the sample gas. 
     
     
       5. The dangerous substance detection system according to  claim 1 , wherein the identification region determines that hydrogen peroxide has been detected if the ion having at least one mass/charge ratio among mass/charge ratios of 66 and 77 is detected from the sample gas. 
     
     
       6. The dangerous substance detection system according to  claim 1 , wherein the second sample introduction pipe is heated to 100° C. to 150° C. 
     
     
       7. A dangerous substance detection system comprising:
 a bottle placement space for placing a bottle to be detected; 
 an introduction region bored in the bottle placement space; 
 an intake region for sucking-in a sample gas from the introduction region; 
 an ion source for ionizing the sucked-in sample gas; 
 a mass analysis region for subjecting an ion generated by the ion source to mass analysis; 
 a data processor for controlling the ion source and the mass analysis region so as to carry out tandem mass analysis; 
 a database region for retaining fragment mass spectrum data derived from a handmade explosive; 
 an identification region for collating the result of the tandem mass analysis of the sample gas carried out by the mass analysis region with the fragment mass spectrum data retained in the database region and determining presence/absence of the handmade explosive; and 
 a monitor for displaying the result of the identification region; 
 wherein 
 the tandem mass analysis is carried out while using the ion having a mass/charge ratio of 145 as a precursor ion; and 
 if the ion having a mass/charge ratio of 117 is detected in a fragment mass spectrum, the identification region determines that hexamethylenetriperoxidediamine has been detected. 
 
     
     
       8. The dangerous substance detection system according to  claim 7 , wherein the ion source generates the ion by a corona discharge. 
     
     
       9. The dangerous substance detection system according to  claim 7 , wherein the identification region determines that triacetone triperoxide has been detected if the ion having at least one mass/charge ratio among mass/charge ratios of 33, 43, 75, and 77 is detected from the sample gas. 
     
     
       10. The dangerous substance detection system according to  claim 7 , wherein the identification region determines that hexamethylenetriperoxidediamine has been detected if the ion having at least one mass/charge ratio among mass/charge ratios of 145, 179, and 209 is detected from the sample gas. 
     
     
       11. A dangerous substance detection system comprising:
 a bottle placement space for placing a bottle to be detected; 
 an introduction region bored in the bottle placement space; 
 an intake region for sucking-in a sample gas from the introduction region; 
 an ion source for ionizing the sucked-in sample gas; 
 a mass analysis region for subjecting an ion generated by the ion source to mass analysis; 
 a data processor for controlling the ion source and the mass analysis region so as to carry out tandem mass analysis; 
 a database region for retaining fragment mass spectrum data derived from a handmade explosive; 
 an identification region for collating the result of the tandem mass analysis of the sample gas carried out by the mass analysis region with the fragment mass spectrum data retained in the database region and determining presence/absence of the handmade explosive; and 
 a monitor for displaying the result of the identification region; 
 wherein 
 the tandem mass analysis is carried out while using both of or either one of the ion having a mass/charge ratio of 66 and the ion having a mass/charge ratio of 77 as a precursor ion; and 
 the identification region determines that hydrogen peroxide has been detected: 
 if the ion having the mass/charge ratio of 66 is a precursor ion and if the ion having the mass/charge ratio of 48 is detected in a fragment mass spectrum or 
 if the ion having the mass/charge ratio  77  is a precursor ion and if the ion having a mass/charge ratio of 60 is detected in a fragment mass spectrum. 
 
     
     
       12. A dangerous substance detection system comprising:
 a bottle placement space for placing a bottle to be detected; 
 an introduction region bored in the bottle placement space; 
 an intake region for sucking-in a sample gas from the introduction region; 
 an ion source for ionizing the sucked-in sample gas; 
 a mass analysis region for subjecting an ion generated by the ion source to mass analysis; 
 a data processor for controlling the ion source and the mass analysis region so as to carry out tandem mass analysis; 
 a database region for retaining fragment mass spectrum data derived from a handmade explosive; 
 an identification region for collating the result of the tandem mass analysis of the sample gas carried out by the mass analysis region with the fragment mass spectrum data retained in the database region and determining presence/absence of the handmade explosive; and 
 a monitor for displaying the result of the identification region; 
 wherein 
 the tandem mass analysis is carried out while using the ion having a mass/charge ratio of 75 as a precursor ion; and 
 the identification region determines that triacetone triperoxide has been detected if the ion having the mass/charge ratio of 75 is used as a precursor ion and if the ion having a mass/charge ratio of 48 is detected in a fragment mass spectrum. 
 
     
     
       13. The dangerous substance detection system according to  claim 7 , wherein the introduction region and the ion source are connected to each other by a sample introduction pipe, and the sample introduction pipe is heated to 50° C. to 150° C. 
     
     
       14. A dangerous substance detection method including:
 a step of sucking-in a sample gas generated from a bottle to be detected; 
 a step of ionizing the sample gas; 
 a step of subjecting the ionized ion to mass analysis; 
 a step of collating a mass spectrum obtained as a result of the mass analysis, with mass spectrum data retained in a database and derived from a handmade explosive; 
 a step of determining presence/absence of a component substance of the handmade explosive based on the collation result; and 
 a step of displaying the result of the presence/absence determination; 
 wherein 
 the mass analysis is carried out while using the ion haying a mass/charge ratio of 145 as a precursor ion; and 
 if the ion haying a mass/charge ratio of 117 is detected in a fragment mass spectrum, the identification region determines that hexamethylenetriperoxidediamine has been detected.